How To Install Node.js on Ubuntu 18.04 LTS & Linux Mint 19

Node.js is a free and open source, cross-platform JavaScript runtime environment for developing web applications and network tools, built on Google’s V8 JavaScript engine.

Node.js lets you use JavaScript for server-side scripting—running scripts server-side to create dynamic web page contents before the page is sent to the user’s web browser. It has an event-driven architecture capable of asynchronous I/O which makes Node.js fast and scalable.